diff options
| author | Maor Gottlieb <maorg@nvidia.com> | 2021-04-11 15:29:22 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-04-13 19:36:36 -0300 |
| commit | 39cc792ff2e8d7814b322547514ef1e3ce5c36a5 (patch) | |
| tree | bf7c6eb751d08f78d1fb45c462a73b52e6d6633d /drivers/infiniband/hw | |
| parent | 251b9d7887505d67dbe5089f78ad5f8d610b2c2f (diff) | |
RDMA/mlx5: Add support to MODIFY_MEMIC command
Add two functions to allocate and deallocate MEMIC operations
by using the MODIFY_MEMIC command.
Link: https://lore.kernel.org/r/20210411122924.60230-6-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/dm.c | 36 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx5/dm.h | 2 |
2 files changed, 38 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/dm.c b/drivers/infiniband/hw/mlx5/dm.c index 29eb5c9df3a4..a648554210f8 100644 --- a/drivers/infiniband/hw/mlx5/dm.c +++ b/drivers/infiniband/hw/mlx5/dm.c @@ -111,6 +111,42 @@ void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr, spin_unlock(&dm->lock); } +void mlx5_cmd_dealloc_memic_op(struct mlx5_dm *dm, phys_addr_t addr, + u8 operation) +{ + u32 in[MLX5_ST_SZ_DW(modify_memic_in)] = {}; + struct mlx5_core_dev *dev = dm->dev; + + MLX5_SET(modify_memic_in, in, opcode, MLX5_CMD_OP_MODIFY_MEMIC); + MLX5_SET(modify_memic_in, in, op_mod, MLX5_MODIFY_MEMIC_OP_MOD_DEALLOC); + MLX5_SET(modify_memic_in, in, memic_operation_type, operation); + MLX5_SET64(modify_memic_in, in, memic_start_addr, addr - dev->bar_addr); + + mlx5_cmd_exec_in(dev, modify_memic, in); +} + +static int mlx5_cmd_alloc_memic_op(struct mlx5_dm *dm, phys_addr_t addr, + u8 operation, phys_addr_t *op_addr) +{ + u32 out[MLX5_ST_SZ_DW(modify_memic_out)] = {}; + u32 in[MLX5_ST_SZ_DW(modify_memic_in)] = {}; + struct mlx5_core_dev *dev = dm->dev; + int err; + + MLX5_SET(modify_memic_in, in, opcode, MLX5_CMD_OP_MODIFY_MEMIC); + MLX5_SET(modify_memic_in, in, op_mod, MLX5_MODIFY_MEMIC_OP_MOD_ALLOC); + MLX5_SET(modify_memic_in, in, memic_operation_type, operation); + MLX5_SET64(modify_memic_in, in, memic_start_addr, addr - dev->bar_addr); + + err = mlx5_cmd_exec_inout(dev, modify_memic, in, out); + if (err) + return err; + + *op_addr = dev->bar_addr + + MLX5_GET64(modify_memic_out, out, memic_operation_addr); + return 0; +} + static int add_dm_mmap_entry(struct ib_ucontext *context, struct mlx5_ib_dm_memic *mdm, u64 address) { diff --git a/drivers/infiniband/hw/mlx5/dm.h b/drivers/infiniband/hw/mlx5/dm.h index 39e66b51264d..6857bbdb201c 100644 --- a/drivers/infiniband/hw/mlx5/dm.h +++ b/drivers/infiniband/hw/mlx5/dm.h @@ -49,5 +49,7 @@ struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev, struct uverbs_attr_bundle *attrs); void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr, u64 length); +void mlx5_cmd_dealloc_memic_op(struct mlx5_dm *dm, phys_addr_t addr, + u8 operation); #endif /* _MLX5_IB_DM_H */ |